.resign-container{
    width: 100%;
    height: cal(100% - 50px);
    height: 100vh;
    display: flex;/*为了使内部的登录页面居中*/
    justify-content: center;
    align-items: center;
}
.resign-dialog{
    width: 400px;
    height: 320px;
    background-color: rgb(220,220,220);
    border-radius: 20px;
}
.resign-dialog h3{
    text-align: center;/*文字居中*/
    padding: 30px 0;
    font-size: 30px;
}
.resign-dialog .row{
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.resign-dialog .row span{
    display: block;
    width: 100px;
    font-weight: 700;
}
#username,#password,#password2{
    width: 200px;
    height: 40px;
    font-size: 20px;
    text-indent: 10px;
    border-radius: 10px;
    border: none;
    outline: none;
}
#submit{
    width: 300px;
    height: 40px;
    background-color: rgb(0,128,0);
    color: white;
    border: none;/*去掉边框*/
    font-size: 20px;
    border-radius: 10px;
}
#submit:active{
    background-color: rgb(66,66,66)
}